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libgstgl: cocoa, eagl: don't marshal GL calls to the context thread

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Execute GL calls without marshalling them to the context thread. In the cocoa
and eagl backends calling gst_gl_context_activate is cheap and therefore calling
it on the current thread and serializing GL calls with a per-context lock is
more efficient (faster and has less overhead) than marshalling everything to the
context thread.

This optimization cuts a large overhead in g_poll (continuously waking up the
context thread) and in g_mutex_*/g_cond_* (waiting for results from the context
thread).
This commit is contained in:
Alessandro Decina 2016-03-07 16:03:25 +11:00
parent e38af23044
commit 797d6415df
6 changed files with 116 additions and 3 deletions
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6
gst-libs/gst/gl/cocoa/gstgl_cocoa_private.h
View file

@ -40,6 +40,7 @@ struct _GstGLContextCocoaPrivate
GstGLAPI context_api;
gint source_id;
GRecMutex current_lock;
};
@ -59,8 +60,13 @@ struct _GstGLContextCocoaPrivate
gboolean gst_gl_window_cocoa_create_window (GstGLWindowCocoa *window_cocoa);
void _invoke_on_main (GstGLWindowCB func, gpointer data);
typedef void (*GstGLContextCocoaInvokeFunc) (gpointer data);
void _gst_gl_context_cocoa_invoke (GstGLContext * context,
GstGLContextCocoaInvokeFunc func, gpointer data, GDestroyNotify notify);
G_END_DECLS
#endif /* __GST_GL_COCOA_PRIVATE_H__ */

25
gst-libs/gst/gl/cocoa/gstglcontext_cocoa.m
View file

@ -43,14 +43,18 @@ GST_DEBUG_CATEGORY_STATIC (gst_gl_context_cocoa_debug);
G_DEFINE_TYPE_WITH_CODE (GstGLContextCocoa, gst_gl_context_cocoa,
GST_GL_TYPE_CONTEXT, GST_DEBUG_CATEGORY_INIT (gst_gl_context_cocoa_debug, "glcontext_cocoa", 0, "Cocoa GL Context"); );
static void gst_gl_context_cocoa_finalize (GObject * object);
static void
gst_gl_context_cocoa_class_init (GstGLContextCocoaClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstGLContextClass *context_class = (GstGLContextClass *) klass;
g_type_class_add_private (klass, sizeof (GstGLContextCocoaPrivate));
gobject_class->finalize = gst_gl_context_cocoa_finalize;
context_class->destroy_context =
GST_DEBUG_FUNCPTR (gst_gl_context_cocoa_destroy_context);
context_class->create_context =
@ -68,6 +72,13 @@ static void
gst_gl_context_cocoa_init (GstGLContextCocoa * context)
{
context->priv = GST_GL_CONTEXT_COCOA_GET_PRIVATE (context);
g_rec_mutex_init (&context->priv->current_lock);
}
static void gst_gl_context_cocoa_finalize (GObject * object)
{
g_rec_mutex_clear (&GST_GL_CONTEXT_COCOA (object)->priv->current_lock);
G_OBJECT_CLASS (gst_gl_context_cocoa_parent_class)->finalize (object);
}
/* Must be called in the gl thread */
@ -327,3 +338,17 @@ gst_gl_context_cocoa_get_current_context (void)
{
return (guintptr) CGLGetCurrentContext ();
}
void
_gst_gl_context_cocoa_invoke (GstGLContext * context,
GstGLContextCocoaInvokeFunc func, gpointer data, GDestroyNotify destroy)
{
GstGLContextCocoa *context_cocoa = (GstGLContextCocoa *) context;
g_rec_mutex_lock (&context_cocoa->priv->current_lock);
gst_gl_context_activate (context, TRUE);
func (data);
if (destroy)
destroy (data);
g_rec_mutex_unlock (&context_cocoa->priv->current_lock);
}

26
gst-libs/gst/gl/cocoa/gstglwindow_cocoa.m
View file

@ -77,6 +77,10 @@ static void gst_gl_window_cocoa_set_preferred_size (GstGLWindow * window,
gint width, gint height);
static void gst_gl_window_cocoa_show (GstGLWindow * window);
static void gst_gl_window_cocoa_queue_resize (GstGLWindow * window);
static void gst_gl_window_cocoa_send_message_async (GstGLWindow * window,
GstGLWindowCB callback, gpointer data, GDestroyNotify destroy);
static void gst_gl_window_cocoa_send_message (GstGLWindow * window,
GstGLWindowCB callback, gpointer data);
struct _GstGLWindowCocoaPrivate
{
@ -111,6 +115,10 @@ gst_gl_window_cocoa_class_init (GstGLWindowCocoaClass * klass)
GST_DEBUG_FUNCPTR (gst_gl_window_cocoa_set_preferred_size);
window_class->show = GST_DEBUG_FUNCPTR (gst_gl_window_cocoa_show);
window_class->queue_resize = GST_DEBUG_FUNCPTR (gst_gl_window_cocoa_queue_resize);
window_class->send_message_async =
GST_DEBUG_FUNCPTR (gst_gl_window_cocoa_send_message_async);
window_class->send_message =
GST_DEBUG_FUNCPTR (gst_gl_window_cocoa_send_message);
gobject_class->finalize = gst_gl_window_cocoa_finalize;
}
@ -370,6 +378,24 @@ gst_gl_cocoa_resize_cb (GstGLNSView * view, guint width, guint height)
[pool release];
}
static void
gst_gl_window_cocoa_send_message_async (GstGLWindow * window,
GstGLWindowCB callback, gpointer data, GDestroyNotify destroy)
{
GstGLContext *context = gst_gl_window_get_context (window);
_gst_gl_context_cocoa_invoke (context, callback, data, destroy);
gst_object_unref (context);
}
static void
gst_gl_window_cocoa_send_message (GstGLWindow * window,
GstGLWindowCB callback, gpointer data)
{
GstGLContext *context = gst_gl_window_get_context (window);
_gst_gl_context_cocoa_invoke (context, callback, data, NULL);
gst_object_unref (context);
}
/* =============================================================*/
/* */
/* GstGLNSWindow implementation */

4
gst-libs/gst/gl/eagl/gstglcontext_eagl.h
View file

@ -65,6 +65,10 @@ void gst_gl_context_eagl_prepare_draw (GstGLContextEagl * context);
void gst_gl_context_eagl_finish_draw (GstGLContextEagl * context);
guintptr gst_gl_context_eagl_get_current_context (void);
/* private */
typedef void (*GstGLContextEaglInvokeFunc) (gpointer data);
void _gst_gl_context_eagl_invoke (GstGLContext * context,
GstGLContextEaglInvokeFunc func, gpointer data, GDestroyNotify destroy);
G_END_DECLS
#endif /* __GST_GL_CONTEXT_EAGL_H__ */

31
gst-libs/gst/gl/eagl/gstglcontext_eagl.m
View file

@ -31,6 +31,7 @@
#define GST_CAT_DEFAULT gst_gl_context_debug
static void gst_gl_context_eagl_finalize (GObject * object);
static gboolean gst_gl_context_eagl_create_context (GstGLContext * context,
GstGLAPI gl_api, GstGLContext * other_context, GError ** error);
static void gst_gl_context_eagl_destroy_context (GstGLContext * context);
@ -53,6 +54,7 @@ struct _GstGLContextEaglPrivate
GLuint framebuffer;
GLuint color_renderbuffer;
GLuint depth_renderbuffer;
GRecMutex current_lock;
};
#define GST_GL_CONTEXT_EAGL_GET_PRIVATE(o) \
@ -63,12 +65,13 @@ G_DEFINE_TYPE (GstGLContextEagl, gst_gl_context_eagl, GST_GL_TYPE_CONTEXT);
static void
gst_gl_context_eagl_class_init (GstGLContextEaglClass * klass)
{
GstGLContextClass *context_class;
context_class = (GstGLContextClass *) klass;
GObjectClass *gobject_class = (GObjectClass *) klass;
GstGLContextClass *context_class = (GstGLContextClass *) klass;
g_type_class_add_private (klass, sizeof (GstGLContextEaglPrivate));
gobject_class->finalize = gst_gl_context_eagl_finalize;
context_class->destroy_context =
GST_DEBUG_FUNCPTR (gst_gl_context_eagl_destroy_context);
context_class->create_context =
@ -90,6 +93,14 @@ static void
gst_gl_context_eagl_init (GstGLContextEagl * context)
{
context->priv = GST_GL_CONTEXT_EAGL_GET_PRIVATE (context);
g_rec_mutex_init (&context->priv->current_lock);
}
static void
gst_gl_context_eagl_finalize (GObject * object)
{
g_rec_mutex_clear (&GST_GL_CONTEXT_EAGL (object)->priv->current_lock);
G_OBJECT_CLASS (gst_gl_context_eagl_parent_class)->finalize (object);
}
/* Must be called in the gl thread */
@ -363,6 +374,20 @@ gst_gl_context_eagl_activate (GstGLContext * context, gboolean activate)
return TRUE;
}
void
_gst_gl_context_eagl_invoke (GstGLContext * context,
GstGLContextEaglInvokeFunc func, gpointer data, GDestroyNotify destroy)
{
GstGLContextEagl *context_eagl = (GstGLContextEagl *) context;
g_rec_mutex_lock (&context_eagl->priv->current_lock);
gst_gl_context_activate (context, TRUE);
func (data);
if (destroy)
destroy (data);
g_rec_mutex_unlock (&context_eagl->priv->current_lock);
}
static GstGLAPI
gst_gl_context_eagl_get_gl_api (GstGLContext * context)
{

27
gst-libs/gst/gl/eagl/gstglwindow_eagl.m
View file

@ -48,6 +48,10 @@ static void gst_gl_window_eagl_set_window_handle (GstGLWindow * window,
static void gst_gl_window_eagl_set_preferred_size (GstGLWindow * window,
gint width, gint height);
static void gst_gl_window_eagl_draw (GstGLWindow * window);
static void gst_gl_window_eagl_send_message_async (GstGLWindow * window,
GstGLWindowCB callback, gpointer data, GDestroyNotify destroy);
static void gst_gl_window_eagl_send_message (GstGLWindow * window,
GstGLWindowCB callback, gpointer data);
struct _GstGLWindowEaglPrivate
{
@ -72,6 +76,10 @@ gst_gl_window_eagl_class_init (GstGLWindowEaglClass * klass)
window_class->draw = GST_DEBUG_FUNCPTR (gst_gl_window_eagl_draw);
window_class->set_preferred_size =
GST_DEBUG_FUNCPTR (gst_gl_window_eagl_set_preferred_size);
window_class->send_message_async =
GST_DEBUG_FUNCPTR (gst_gl_window_eagl_send_message_async);
window_class->send_message =
GST_DEBUG_FUNCPTR (gst_gl_window_eagl_send_message);
}
static void
@ -125,6 +133,25 @@ gst_gl_window_eagl_set_preferred_size (GstGLWindow * window, gint width, gint he
window_eagl->priv->preferred_width = width;
window_eagl->priv->preferred_height = height;
}
static void
gst_gl_window_eagl_send_message_async (GstGLWindow * window,
GstGLWindowCB callback, gpointer data, GDestroyNotify destroy)
{
GstGLContext *context = gst_gl_window_get_context (window);
_gst_gl_context_eagl_invoke (context, callback, data, destroy);
gst_object_unref (context);
}
static void
gst_gl_window_eagl_send_message (GstGLWindow * window,
GstGLWindowCB callback, gpointer data)
{
GstGLContext *context = gst_gl_window_get_context (window);
_gst_gl_context_eagl_invoke (context, callback, data, NULL);
gst_object_unref (context);
}
static void
draw_cb (gpointer data)